Analogy of how Greek, Irish, and German monetary union works

In the past:
A Greek man used to drink a lot in a relaxing traditional inexpensive pub.
An Irish man used to drink in a narrow rought working class bar while a British man drinks in a wide classy middle class salon beside where this Irish man is (both places are next to each other but separated by a partition.)

Now:
This Greek man and this Irish man started to go to a modern urban-like expensive pub where a German man goes. This Greek man and this Irish man are not used to the culture of German man's pub. So, this German man doesn't like this Greek and this Irish manner so this German wants to teach them his own way in his regular pub!


* I don't way this German man is always right. Personality takes all kinds. Only the thing I can say is that "When in Rome, do as the Romans do".